To me, there are two separate types of contract involved: one-year contract and subsequent 'permanent contract'. The period of one-year contract will be excluded unless it was specifically included in the new appointment letter. By the way, what was the date of your appointment into permanent service? Was there a break of say a month before the permanent contract? If no, there could be a doubt.
Although you may not be covered by the Employment Act, Regulation 3(2) of the Employment Regulations has this to say and you may use it to argue your case:
"3(2) For the purpose of this regulation a continuous contract of service for a period of not less than twelve months shall include two or more periods of employment which are not less than twelve months in the aggregate if the intervening period or periods between one period of employment and another does not in the aggregate exceed thirty days. "
You may seek an official opinion from the Industrial Relations Department.
Do update us should you get one from the IR Department.